Apple could easily put a stop to rumor sites if they wanted to.... all that it would require is announcing product release dates in advance.
LOL.
No.
You think announcing products in advanced would magically eliminate rumour sites?? Well what about the rumors of unannounced products? Apple has the cult status and because of that people will always be looking for the latest rumors on their activities, and with that demand, there will always be websites willing to supply. This has been said before but, early announcements only cause trouble because they can often be met with delays/let downs. And then people (investors) have a real reason to be pissed off, because it actually came from Apple's mouth. If its coming from the rumor sites, people have no one to be pissed at but themselves for getting their hopes up for the stupid rumors in the first place.